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Macro by Mark

Global Economic Data, Empirical Models, and Macro Theory
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Public data from government agencies and multilateral statistical releases, anchored in official sources

© 2026 Mark Jayson Nation

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Theory-Based Models

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Loanable Funds
Model

The supply of savings meets the demand for investment at an equilibrium real interest rate. When households save more, the supply curve shifts right and the rate falls; when firms want to invest more, the demand curve shifts right and the rate rises.

What determines the real interest rate in an economy where savers and investors interact through credit markets?

Composition

rrr
Real interest rate

The price of borrowing in real terms, which equili...

SSS
Saving

The quantity of national saving supplied at a give...

III
Investment

The quantity of investment demanded at a given rea...

GraphProofCompare

Short Run Equilibrium

Real rate

8.57

Funds exchanged

4.9